It's a so-called headless CMS, which means you can use almost anything you know as a front end. Strapi will not force you into anything. Strapi's strengths are scalability, speed and simplicity.
We chose Strapi to create our corporate website, which you are currently looking at. This allowed us to have a free hand in how we design and manage content on our website and also greatly simplified content management and training of new colleagues.